.checkout-page{min-height:100vh;background:#f8fafc;padding-bottom:4rem}.checkout-header{background:#fff;border-bottom:1px solid #e8ecf1;padding:2rem 0}.checkout-header-inner{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center}.checkout-title-group{display:flex;align-items:center;gap:1rem}.checkout-icon-wrap{width:56px;height:56px;background:linear-gradient(135deg,#10b981,#059669);border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff}.checkout-header h1{font-size:1.75rem;font-weight:700;color:#1a1a2e;margin:0}.checkout-subtitle{color:#8492a6;font-size:.95rem;margin:.25rem 0 0}.back-to-cart{display:inline-flex;align-items:center;gap:.5rem;color:#64748b;text-decoration:none;font-size:.95rem;transition:color .2s}.back-to-cart:hover{color:#1a1a2e}.checkout-container{max-width:1200px;margin:2rem auto;padding:0 2rem}.checkout-loading{text-align:center;padding:4rem}.loading-spinner{width:40px;height:40px;border:3px solid #e8ecf1;border-top-color:#10b981;border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 1rem}@keyframes spin{to{transform:rotate(360deg)}}.checkout-layout{display:grid;grid-template-columns:1fr 380px;gap:2rem}@media(max-width:900px){.checkout-layout{grid-template-columns:1fr}}.checkout-section{background:#fff;border-radius:16px;padding:2rem;margin-bottom:1.5rem;box-shadow:0 1px 3px #0000000a;border:1px solid #e8ecf1}.section-title{display:flex;align-items:center;gap:.75rem;font-size:1.25rem;font-weight:600;color:#1a1a2e;margin:0 0 1.5rem}.section-title svg{color:#10b981}.contact-form{display:flex;flex-direction:column;gap:1.25rem}.form-row{display:flex;flex-direction:column;gap:.5rem}.form-row label{font-size:.9rem;font-weight:500;color:#4a5568}.required{color:#ef4444}.form-row input{padding:.875rem 1rem;border:1px solid #e2e8f0;border-radius:10px;font-size:1rem;transition:border-color .2s}.form-row input:focus{outline:none;border-color:#10b981}.order-items{display:flex;flex-direction:column;gap:1rem}.order-item{display:flex;align-items:center;gap:1rem;padding:1rem;background:#f8fafc;border-radius:12px}.item-info{display:flex;align-items:center;gap:1rem;flex:1}.item-icon{width:48px;height:48px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff}.item-name{font-weight:600;color:#1a1a2e;margin-bottom:.25rem}.item-license{font-size:.85rem;color:#8492a6}.item-qty{color:#64748b;font-size:.9rem}.item-price{font-weight:600;color:#1a1a2e;font-size:1.1rem}.payment-methods{display:flex;flex-direction:column;gap:1rem}.payment-option{cursor:pointer}.payment-option input{display:none}.payment-card{display:flex;align-items:center;gap:1rem;padding:1.25rem;border:2px solid #e2e8f0;border-radius:12px;transition:all .2s}.payment-option input:checked+.payment-card{border-color:#10b981;background:#f0fdf4}.payment-icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center}.alipay-icon{background:linear-gradient(135deg,#1677ff,#0958d9);color:#fff}.wechat-icon{background:linear-gradient(135deg,#07c160,#06ae56);color:#fff}.payment-name{font-weight:600;color:#1a1a2e;margin-bottom:.25rem}.payment-desc{font-size:.85rem;color:#8492a6}.order-summary{background:#fff;border-radius:16px;padding:2rem;position:sticky;top:2rem;box-shadow:0 1px 3px #0000000a;border:1px solid #e8ecf1}.order-summary h3{font-size:1.25rem;font-weight:600;color:#1a1a2e;margin:0 0 1.5rem}.summary-rows{display:flex;flex-direction:column;gap:.75rem}.summary-row{display:flex;justify-content:space-between;color:#64748b;font-size:.95rem}.free-shipping{color:#10b981;font-weight:500}.summary-divider{height:1px;background:#e8ecf1;margin:1.5rem 0}.summary-final{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:1.5rem}.summary-final span{font-size:1rem;color:#4a5568}.final-price{display:flex;align-items:baseline}.final-currency{font-size:1.25rem;font-weight:600;color:#ef4444}.final-amount{font-size:2rem;font-weight:700;color:#ef4444}.btn-pay{width:100%;padding:1rem;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;transition:all .2s}.btn-pay:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #10b9814d}.btn-pay:disabled{opacity:.6;cursor:not-allowed}.payment-guarantees{display:flex;justify-content:space-around;margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid #e8ecf1}.guarantee-item{display:flex;align-items:center;gap:.5rem;font-size:.85rem;color:#64748b}.guarantee-item svg{color:#10b981}.empty-state,.error-state,.success-state,.wechat-state{text-align:center;padding:4rem 2rem;background:#fff;border-radius:20px;box-shadow:0 1px 3px #0000000a;border:1px solid #e8ecf1}.empty-illustration,.success-icon{margin-bottom:2rem}.empty-state h2,.success-state h2,.wechat-state h2{font-size:1.5rem;font-weight:700;color:#1a1a2e;margin:0 0 .75rem}.empty-state p,.success-state p,.wechat-state p{color:#8492a6;font-size:1rem;margin:0 0 1rem}.success-hint,.wechat-hint{font-size:.9rem;color:#10b981}.empty-actions,.success-actions,.wechat-actions{display:flex;gap:1rem;justify-content:center;margin-top:2rem}.btn-go-shop,.btn-primary,.btn-secondary{display:inline-flex;align-items:center;gap:.5rem;padding:.875rem 1.75rem;border-radius:10px;font-weight:500;text-decoration:none;transition:all .2s}.btn-go-shop,.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-go-shop:hover,.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea4d}.btn-secondary{background:#f1f5f9;color:#4a5568}.btn-secondary:hover{background:#e2e8f0}.wechat-qr{margin:2rem 0}.wechat-qr img{width:200px;height:200px;border:1px solid #e8ecf1;border-radius:12px}